The most consequential debate in American utility regulation right now is not about renewables or transmission or nuclear restarts. It’s about cost allocation — specifically, who pays for the enormous grid investment required to serve data centers, and whether it’s the companies building them or the households who happen to live in the same service territory.

The scale of the question caught most people off guard. One analysis puts the amount already added to consumer electricity bills as a result of data center demand at roughly $23 billion. Wholesale power prices in capacity-constrained regions have risen sharply, transmission upgrade costs are being spread across ratepayer bases, and in several markets the retail price increases have been large enough to become a live political issue.

What makes this genuinely complicated is that the obvious story isn't entirely right. Data centers are not straightforwardly parasitic on the grid. They are large, creditworthy, extremely predictable customers with flat load profiles, which is close to the ideal customer from a utility's perspective.

In some regions the arrival of data centers spread fixed costs across more kilowatt-hours and actually pushed rates down. Recent academic research found that, nationally, data center growth between 2015 and 2024 modestly reduced average retail electricity prices by allowing utilities to spread fixed generation, transmission and distribution costs across a larger sales base. That dynamic reverses once demand growth outruns generation and transmission capacity, at which point utilities must build new infrastructure, wholesale prices rise, and everyone on the system pays the higher clearing price.

Congressional........

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